Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with graphical user interface, showing my new design; and,

FIG. 2 is a front view of a display screen or portion thereof with graphical user interface showing my new design.

The broken lines in the Figures show portions of the display screen or portion thereof and portions of the graphical user interface which form no part of the claimed design. 

The ornamental design for a display screen or a portion thereof with graphical user interface, as shown and described. 